<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.$store.state.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item in hotCities" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(value,key) in cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item border-bottom" v-for="item in value" :key="item.id" @click="handleCityClick(item.name)">{{item.name}}</div>
      </div>
    </div>
  </div>
</template>
<script>
  import BScroll from 'better-scroll'

  export default {
    name: 'List',
    props: {
      cities: Object,
      hotCities: Array,
      index: String
    },
    methods:{
      handleCityClick(city){
        this.$store.dispatch("changeCity",city)
        this.$router.push("/");
      }
    },
    mounted() {
      this.scroll = new BScroll(this.$refs.wrapper)
    },
    watch: {
      index() {
        if(this.index){
          const element = this.$refs[this.index][0];
          this.scroll.scrollToElement(element)
        }
      }
    }
  }
</script>
<style lang="stylus" scoped>
  @import "~styles/varibles.styl"
  .border-topbottom
    &:before
      border-color #ccc
    &:after
      border-color #ccc
  .border-bottom
    &:before
      border-color #ccc
  .list
    position absolute
    left 0
    right 0
    top 1.58rem
    bottom 0
    overflow hidden
    .title
      line-height .54rem
      background #eee
      color #666
      padding-left .2rem
      font-size .26rem
    .button-list
      padding .1rem .6rem .1rem .1rem
      overflow hidden
      .button-wrapper
        width 33.33%
        float left
        .button
          text-align center
          margin .1rem
          padding .1rem 0
          border .02rem solid #ccc
          border-radius .06rem
    .item
      height .54rem
      line-height .54rem
      padding-left .2rem


</style>
